Is it possible to change the odds of winning during the campaign?

Yes, the probability of winning can be changed during the campaign.
However, the gift cannot be changed during the course of the campaign.

Winners are drawn at random according to probability, so there may be a bias in favor of the winners. In such cases, the probability can be changed from the administration screen.

To avoid excess gifts, make sure that all products are distributed to all participants to ensure the success of the campaign.